Do arteries always carry highly oxygenated blood? Explain your answer. What will be an ideal response?
ANSWER: No! The prominence of the systemic circulatory system sometimes creates the
misunderstanding that arteries carry highly oxygenated blood. But the characteristic of
arteries is that they carry blood away from the heart. Thus, in the pulmonary circulatory
system they actually carry low oxygen blood.
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Eukaryotes have three nuclear RNA polymerases. The primary function of RNA polymerase II is transcription of _____
A) only rRNA-coding genes B) only tRNA-coding genes C) both rRNA- and tRNA-coding genes D) protein-coding genes
?-oxidation
A) is the second step in the oxidation of glucose. B) is a process used to oxidize fatty acids. C) occurs in the cytoplasm. D) is a process used to digest some polysaccharides. E) lengthens fatty acids by addition of two carbons.
Body cells that respond to insulin include
A) Liver cells, as well as most other cells of the body. B) Liver cells and muscle cells only. C) Intestinal cells only. D) Muscle cells only. E) Liver cells only.
When referring to tumor-suppressor genes and cancer, loss of heterozygosity is likely to suppress cancer formation
Indicate whether the statement is true or false